// 显示时间
var t = null;
t = setTimeout(time,1000);//开始执行
function time(){
    clearTimeout(t);//清除定时器
    dt = new Date();
    var y=dt.getYear()+1900;
    var mm=dt.getMonth()+1;
    var d=dt.getDate();
    var weekday=["星期日","星期一","星期二","星期三","星期四","星期五","星期六"];
    var day=dt.getDay();
    var h=dt.getHours();
    var m=dt.getMinutes();
    var s=dt.getSeconds();
    if(h<10){h="0"+h;}
    if(m<10){m="0"+m;}
    if(s<10){s="0"+s;}
    document.getElementById("timeShow").innerHTML = "您好，现在是"+y+"年"+mm+"月"+d+"日"+weekday[day]+" "+h+":"+m+":"+s+"";
    t = setTimeout(time,1000); //设定定时器，循环执行
}
